Toshiba Satellite Pro A120 (PSAC1) - Manual (Page 199)

User’s Manual Glossary-12
Glossary
R
Radio frequency interference (RFI) shield: A metal shield enclosing the
printed circuit boards of the printer or computer to prevent radio
and TV interference. All computer equipment generates radio
frequency signals. The FCC regulates the amount of signals a
computing device can allow past its shielding. A Class A device is
sufficient for office use. Class B provides a more stringent
classification for home equipment use. TOSHIBA portable
computers comply with Class B computing device regulations.
Random Access Memory (RAM): High speed memory within the
computer circuitry that can be read or written to.
restart: Resetting a computer without turning it off (also called "warm
boot" or "soft reset"). See also boot.
RGB: Red, green, and blue. A device that uses three input signals, each
activating an electron gun for a primary additive color (red, green,
and blue) or port for using such a device. See also CRT.
RJ11: A modular telephone jack.
RJ45: A modular LAN jack.
ROM: Read Only Memory: A nonvolatile memory chip manufactured to
contain information that controls the computer’s basic operation.
You cannot access or change information stored in ROM.
S
SCSI: Small Computer System Interface is an industry standard interface
for connection of a variety of peripheral devices.
SD card: Secure Digital cards are flash memory widely used in a variety of
digital devices such as digital cameras and Personal Digital
Assistants.
serial communications: A communications technique that uses as few
as two interconnecting wires to send bits one after another.
serial interface: Refers to a type of information exchange that transmits
information sequentially, one bit at a time. Contrast: Parallel
interface.
SIO: Serial Input/Output. The electronic methodology used in serial data
transmission.
soft key: Key combinations that emulate keys on the IBM keyboard,
change some configuration options, stop program execution, and
access the numeric keypad overlay.
software: The set of programs, procedures and related documentation
associated with a computer system. Specifically refers to computer
programs that direct and control the computer system’s activities.
See also hardware.
stop bit: One or more bits of a byte that follow the transmitted character or
group codes in asynchronous serial communications.